Can-filling machine.



E. R OLDBN.

CAN FILLING MACHINE. APPLICATION FILED DEO.18, 1911.

1,036,46. Pat nted Aug. 27, 1912.

11 8HBBTB-BHEET 1. g

B, P. HOLDEN. CAN FILLING MACHINE. APPLICATION FILED 13110.18, 191 1.

Patented Aug. 27, 1912.

' 11 SHEETS-SHEET 2.

E P. HOLDEN.

m PIiLLmG momma. APPLICATION 311 515 DEO.18, 1911'.

Patented Aug. 27, 1912;

11 SHEETS-SHEET 3.

B. P. HOLDEN.

CAN FILLING MACHINE.

APPLICATION FILED DBO. 1a, 1911.

Patentgd Aug. 27, 1912.

11 SHEETS-SHEET 4.

5 I l .3 56 '54 4 i 55 7 /17// 2g )L-QO V 25 i ,42: g 25 Y sa- I L 82 m l K ()8 L 7 5 Q g3 1. 79 71 75 f I Q E. P. HOLDEN. I CAN FILLING MACHINE. APPLICATION FILED D3018, 1911.

Patented Aug. 27,1912.

11 SHEETS-SHEET 6.

vELfl i may i 1 aff/o Me,

E. P. HOLDEN. CAN FILLING MACHINE. APPLICATION FILED D20. 18, 1911. 1 36 46 Patented Aug. 27, 1912.

11 SHEETS-SHEET 6.

E. P. HOLDEN. CAN FILLING MACHINE. AP PLIOATIOH IILED D110. 18, 1911.-

' Patented Aug. 27, 1912.

11 SHEETS-SHEET 7.

E. P; HOLDEN.

GANTILLING MACHINE.

Arrucumn FILED 11no.1e ,'1a11.

Patented Aug. 27, 1912.

11 SHEETS-SHEET 8.

E P..HOLDEN. CAN FILLING MACHINE. 11 91110111011 FILED DEO.18, 1911.

Patented Aug. 27,1912.

11 SHEETS-SHEET 9.

E. P. HOLDEN.

. CAN FILLING MACHINE. APPLICATION rnmi'nao. 1a, 1911.

1,036,846, V Patented Aug. 27, 1912.

11 SHEETS-SHEET 10.

E. P. HOLDEN.

CAN FILLING MACHINE.

APPLICATION FILED DEO.18, 1911.

1 1 136 4 Patented Aug. 27, 1912.

I 11 SHEETS-SHEET ll.

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- storage and shipping, and to so compress a:

nnwannrlnonnnn, or CHICAGO,

ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS; TO CORNO MILLS CO.

CAN-FILLING MACHINE.

Specification of Letters Patent.

Application filed December 18. 1911.

To all whom it may concern .1

Be it known that I, EDWARD P. HOLDEN, a citizen of the United States, and a resident of the city of Chicago, in the county of Cook and State of Illinois. have invented certain new and useful Improvements in Can-Filling Machines; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the numbers of reference marked thereon, which form a part of this specification.

Certain food products, for example, oatmeal and other cereal products, are preserved with ditliculty in certain climates as heretofore ordinarily packed. This is particularly true with export oatmeal and .it has been found through experience that in some climates such products packed in paper cartons, quickly deteriorate through the absorption of moisture and from other causes, while if put and compressed into metallic cans, tightly sealed, deterioration is prevented and the product maybe kept for long periods of time without injury.

The object of this invention is to afford a machine for packing a. cereal, for example,-

oatmeal flakes-or rolled oats, into metallic cans to enable the required amount, for example, one pound, to be placed in a can of the smallest possible size to economize in cereal and seal the can as to prevent deterioration. a

It, is also an object of the invention to afford a press adapted for use in conjunction with any suitable charging or loading machine, and actlng to exert high pressureupon the contents of the can, reduclng the same practically to the condition of asolid mass within the can. i

It is also an object of theinvention to afford a construction in which the can is rigidly engaged and held from disruption,

distortion or deformation during the filling and pressing operation, and in which the holding and the pressing means coact to aflord a brief dwell at the point-of maximum compression to set the material in place.

It is also an object of the invention to afford a feed mechanism for successively matic and positive drive therefor acting to Patented Aug. 27, 1912. Serial No. 666,334.

exactly position the cans for the respective com pressing elements in exact register therewith.

The invention in its preferred form is hereinafter more fully illustrated and described.

In the drawings: Figure 1 is a view in elevation of the drive or belt side of the machine. Fig. 2 is a view in elevation of the opposite side of the machine. Fig. 3 is a front elevation thereof. Fig. 4 is a central longitudinal section. Fig. 5'is a section on line 5-5 of Fig. 4. Fig. 6 is a section on line 66 of Fig. 4, with parts omitted. Fig. 7 is an enlarged fragmentary section on line 7-7 of Fig. 4. Fig. 8 is an enlarged rear elevation of the upper frame and parts'connccted therewith. Fig. 9 is a fragmentary section on line 9-4) of Fig. 8. Fig. 10 is an enlarged. sectional, fragmentary detail of a part of the feed mechanism for the conveyer. Fig. 11 is a section taken on line 1111 of Fig. 8. Fig. 12 isa section on line IL -1iof Fig. 8. Fig. 13 is an enlarged detail view of a part of the conveyer feed mechanism. Fig. 14 is an enlarged section on line 14-14 of Fig. 6. Fig. 15 is an enlarged section broken away, on line 15-15 of Fig. 6. Fig. 16 is an enlarged view in elevation of the main shaft, with the gear wheels and all but one of the cams thereon in section. Fig. 17 is a fragmentary bottom plan view of the chain conveyor. Fig-18 isa section taken on line 18-18 of Fig. 17, showing the driving connection between the feed mechanism and said conveyer. Fig. 19 is an end elevation of one of the links of the conveyor chain.

As shown in the drawings: Said ma chine embraces a suitable frame, an intermittently traveling carrler for the cans, means feeding the-material into the cans, a

battery of reciprocating plungers to comthe filled cans. Said frame comprises front legs I, and rear legs 2, on opposite sides of the machine, and, as shown, constructed of.

cast metal, though, of course, any suitable material will suffice, and supported and rigidly bolted thereon is a cast metal table 3, having integral side and end rails or flanges, which bear upon and are r1gidlysecured to said legs afi'ording an exceedingly strong and rigid connection therewith. J ournaled in suitable bearings 4 and 5. extending transversely the machine, and secured side rails or bars of-the frame or table. is

a main shaft 6. 4 Journaled on said main. shaft at the outer side of the bearing box- 4;

is a pinion 7, having an outwardly directed hub 8, thereon, on which is rigidly keyed a belt pulley 9. Rigidly keyed on the shaft at the inner side of said bearing box 4, is a large spur gear 10. Journaled transversely the machine above the legs 2, and

in suitable bearing boxes at the ends of the tween the bearing boxes 4 and 5, is a cam' 14, having a somewhat .abrupt throw therein, and release, and affording a holding face substantially concentric with the shaft to afford a dwell for, the element actuated thereby, during a part of the revolution of the shaft 6. Rigidly keyed on the shaft 6, on the opposite side of the cam 14, from the gear wheel 10, is a cam wheel 15, and, as shown, said gear wheel 10, and said cam wheel 15, are each provided with a cam groove on the inner face thereof adjacent thehcam 14, corresponding in shape therewit Journaled on suitable bearings 16, one on.

each side the frame at the under side thereof, on a shaft 17, is a lever, the power end of which is slotted to afford two parallel rearwardly directed arms 18, to extend one on each side of the cam 14, as shown in Fig. 6, and extending through suitable bearings at said extremities of said arms is a shaft 19, provided intermediate said arms with a roller 20, thereon to track on the periphery of the cam 14, and provided on each extremity with a roller of like size, which fit and travel respectively in the cam grooves in the gear 10, and in the cam wheel 15,-

' thereby afiording alarge bearing upon the cam surface whereby said'lever is actuated.

The forward or weight end of said lever isprovided with a transverse bore therethrough parallel the shaft 17, on which said lever is fulerumed, and extending therethrough is a shaft 21, which isjournaled at its ends at each. side the lever in the bearmg blocks 22. Rigidly bolted on the table, .QueQgeach side, and at the front endthereof, are iipwardly extending standards or posts 23, which extend well above "the table on the under side ofthe respective I is an anti-friction roller 45, shown in and are provided on the inner side thereof with parallel guides 24, one on each side of the same extending from the top thereof to blocks 29, on the under side thereof arranged transversely the machine. Journaled in said bearing blocks 29, is a shaft 30, and keyed thereto' are parallel toggle arms 31, through the lower ends of which extends a shaft or .pintle 32, which also extends through the upper ends of corresponding toggle bars 33. The lower. ends of said toggle bars 33, are connected or articulated by means of a shaft 34, with a head block 35 secured in a carria e 36 adapted to reciprocate up and. down .ber tween the guides 24, on said-standards, and,

as shown, a stop 37, is provided in said carriage to limit the inward swing of the joint in said toggle bars 'to vertical alinement. As shown, the shaft 32, articulating the toggle bars 31, with the toggle bars 33, is provided at opposite ends with a roller 38, as shown inFig. 8, which engages between the parallel guide members or ways 24, on each standard when the toggle bars are brought into alinement and which act to hold the toggle bars in alinement when maximum pressure is applied. As shown, the rear of said ways is provided with an upward projection 40, which acts with said stop 37, to insure the rollers on the end of the shaft entering between the ways when the toggle bars are thrown into alinement. Rigidly secured on the end of the shaft 30,

is a crank arm 41, and journaled thereon at of a stud 44, as shown in Figs. 1 and 14.

Journaled on the inner side of said lever 43,

dotted lines in Fig. 14, which extends into, and

.travels in .acam recess in the outer side of the gear wheel 10. Said cam groove n sald gear wheel, as shown, is of such conformation as to afford a projection or throw 46,

substantially concentric with the shaft 6,

v for approximately one hundred and eighty degrees,-

and acting to draw the rod 42 downwardly, thereby bringing the toggle bars into alinement and sliding the carriage downwardly. At the opposite side of said projection or throw 46, the oppositewall of the groove approaches the shaft to elevate said rod 42, and the toggle bars and carriage and atall other point-s said cam groove is sufficiently broad to permitdownward movement of said rod 49,,independently of the cam surface normally actuating the same. Secured on said carriage on the under side thereof, are a plurality of phmgers 47, as shown three in number, and arranged in parallel relation and in alinement. transversely the machine, each of said plunger-s being of a size to fit within the can to be packed.

The conveyer or carrier for the cans. is arranged transversely the front end of the machine and comprises an endless traveling link beltby means of which the cans are conveyed and accurately positioned beneath the compressing plungcrs. As shown, laterally directed brackets 48..{1110 provided, one on each side of the machine, and rigidly bolted thereto and in alinement withthe standards 23, for the compressing plungers polygon having faces corresponding in length with the .links 51, of the conveyer chain. Said links 51, of said-carrier chain or conveyer are of a well known type, affording a flat continuous carrying surface on the upper run thereof between the sprocket wheels. Supported on said brackcts 4-8. on standards 52, arranged on opposite sides of the standards 23, for the plunger, are tables 53 and 54, the one serving as a feed table and .the other to receive the filled cans after the same have been capped or closed. .\s shown, a metallic beam or bed piece 55, is supported on the top of the table 3, beneath the upper run of the conveyer, and serves as a positive support therefor be-' neath the plungers, and, as shown, is milled to afford a seat for the chain, so that the chain lies with the upper or supporting surface thereof, substantially flush with the surface of said beam 55. As shown also, a longitudinal groove is provided in said beam beneath the upper run of the chain and slidably engaged therein is a reciprocating feed bar 56, as shown in Figs. 4, 7, and 18, which lies beneath the longitudinal middle of the chain and is provided in its face with recesses at intervals apart corresponding with the length of the links 51,. of the chain, and secured in said recesses and at their rear ends, are springpressed pawls 57, one beneath each of the plungcrs 47'. as shown in Fig. 18, and in dotted lines in Fig. 7, and which engage in complemental recesses in the links of said conveyor to afford means for engaging the conveyer and correctly positioning the cans thereon beneath the plungers. 'Said feed bar maybe actuated in any suitable manner. As shown, however, a

bracket 59, is rigidly secured on the side of the machine near the cam wheel 60, rigidly secured on the shaft 6. Said bracket supports the slide bar 61, which is provided at. its rear end with an anti-friction roller (32, which tracks in a cam groove in the cam wheel (30, as shown in Fig. 2, and which acts with each rotation of the shaft 6, to reciprocate said slide bar forwardly and to return the same to normal. The throw ofthc cam on said cam wheel 60, is equal to the distance the filled cans are required to move to clear the plungers and to position the next succeeding empty cans beneath the plungers for fillin Journaled in said bracket 59, is an upright shaft 63, and rigidly secured on the lower end thereof are slotted crank arms 64:. The cam rod 61, ex-

.tends between the crank arms 64 and is engaged thereto by means of a pin 65. which extends through slotted apertures 'in the arms of said crank, as shown in Fig. 10. At its upper end said shaft 63, is provided with a crank arm 66, as shown in Figs..2 and 13, and in the extremity of which is a slotted aperture adapted to engage the pin 67, engaged in'the outer end of the pawl rod or actuating bar 56, before described.

The links 51, of the carrier chain are each provided centrally in the upper face thereof, with a circular groove, as shown in Figs. 1, 2 and 5, to receive the flange of the can therein to permit the bottom of 'the can to rest fair upon the face of the link, said circular groove being of a size to fit comparatively closely to the end flange of the can, thus serving as a guide to exactly position each-empty can upon the conveyor or carrier to register with the plunger therefor in filling and compressing.

Owing to the great pressure exerted on the contents of the can, it is also desirable to support the side walls of the can during the compressing operation. Forthis purpose, as shown, upwardly extending transverse brackets 68, are rigidly bolted'to the table at the front and at the rear of the standards 23,'

Connecting said brackets at their top andcxtending longitudinally the table, are rods 70, arranged closely adjacent. the standards 23, before'described. Slidably supported on said rods are clamping jaws 71 and 72, on.

the front and the rear side of the conveyer chain respectively, as shown in Figs. 4 and 5, and which are provided with semi-circular seats in the corresponding faces'thereof to engage a can therein and therebetween. Supported upon the ledge 69, of the bracket 68, in any suitable manner, is a bar or beam 73, arranged at the same level with the clamping jaws 71 and 72, and pivotally engaged thereon is a link 74, the other extremity of which is connected by means of a link 75, with one arm 76, of a bell-crank, which is journaled in suitable bearings below the table top and the other arm 77, of which extends downwardly. The. downwardly directed ends of said bell cranks are pivotally connected by means of a link 78, and pivotally engaged at the rear-end of said link 78, and to said bell cranks thereby, is a reciprocating cam rod 79, which is provided with a yoke 80, at its rear end, which engages over the shaft (5, to support the rear end thereof. 81, is journaled on the inner side of the cam rod and tracks inv a suitable cam groove 83, in the outer side of the cam wheel 15.

As shown, a link or toggle bar 82, is engaged on each of the clamping jaws 71 and 72, and pivotally engaged on the link 74, between the ends thereof, and the cam is so timed that as the chain moves forwardly positioning the empty cans beneath the plungers and comes to rest, the clamping jaws 71 and 72, are reciprocated inwardly to firmly engage the cans therebetween,supporting and holding the same against the thrust of the plungers, and releasing and retracting said aws when the compressing operation is completed and just before the conveyor chain begins its next forward movement.

Conveniently, and, as shown, the brackets 68, and the bed beam 55, may be constructed integrally, it merely being necessary to provide apertures on each side the bed beam for the toggle levers beforedescribed, to engage therethrough.

Means are provided for closing oreapping the cans after the same have been filled. For

this purpose, as shown in Figs. 2, 3, 5. and

throw the same upwardly and consequentlyv depress the opposite end 88, of'saidlever, which projects over the discharge table 54.

Secured transversely the forward end of said lever, is a capping die 89', having seatstherein to fit into the .spring caps for the cans, and acting to jam the caps ,into the cans to close the same. I The operation is as follows: The machine having been started in operation, the cans are placed upon the conveyor chain, one

,upon each link with the flange of the can bottom engaging in the groove in the face of As shown, an anti-friction rollerthe link. The conveyor chain is moved forward a number of links at a time, corresponding with the number of compressing .moves forwardly and comes to rest with a plurality of cans -(in the present instance shown as three) positioned between the standards 23, and directly beneath the plungers, the material to be packed into the cans is fed downwardly through a chute 90, connected with any suitable measuring and charging device capable of discharging the requisite'amount of material into the can, but which may be any of the well known types of devices of this kind, and forms no part of this invention. The requisite amount of material having been discharged into the can, immediately following the carrier coming to rest, the rod 42, is drawn downwardly, by the cam projection 46, on the gear wheel 10, bringing the toggle bars 31 and 33, into alinement, and bringing the rollers on the shaft or pintle of the toggle bars between the guides 24, therefor, at the inner sides the, standards 23, and with the plunger-s entered in the cans and exerting considerable pressure on the material there'- in. Simultaneously with the downward movement of the plungers, the clamping jaws 71 and 72, are brought into clamping engagement with the cans by the forward movement of the cam bar 7 9, actuatingthe bell cranks before described, thus positively supporting the cans upon all sides. The further rotation of the shaft 6, now brings the cam 14, and the corresponding cam faces in thegear wheel 10, and cam wheel 15, into engagement with the rollers 20, carried on the shaft 19, at thepower end 18, of the main compressing lever, throwing the opp0-.

site end of said lever downwardlyand thereby drawing the plungers downwardly through the medium of the rods 27, as shown in Fig. 8. The cam 14, and'also the corresponding cam faces in the side of the gear wheel 10, and cam wheel 15, is provided with a relatively ong bearing surface concentric with the shaft ,6, acting to hold the plungers at their maximum compressing position for a sufiicientperlod to permit the material for illustration, rolled oats) to adapt itself to the pressure, so that with the retraction of the plungers by the continued rotation. of the cam wheels before described, and the upward thrust of the rod 42, there is but very slight tendency for the material to follow the plnngers. In other words, the slight dwell ofthe plungers'uponthe compressed material, acts to destroy the reslh- -eney of the flake to some extent and also affords time to permit the'escape of air from betweenthe flakes, thus, obviating a difiiculty heretofore always foundin machines places a springor friction cap on each be}. r forethe same'passes under the sealing or;

capping die 89,- and the same having assed" beneath the capping die, as shown in v ig. 7;,

the projection 87, on the periphery of the cam wheel 60, actuates said capping die downwardly, jamming the spring or friction cap firmly into the mouth of the can, and in effect hermetically. seals the same.-

While I have showna pluralityotcan's treated simultaneously in filling, compress ing and sealing, it is to be understood that the machine, to all intents and purposes, op-

'erates the same whether one or many cans be operated upon. The great pressureto which the material is subjected, reduces the same to practically the condition of a solid mass v.within'the can, without, however,- so destroying the. grain or flake as to preclude it assum' remove from'the can and-moistened. The spring or' friction ap, however, serves to exclude all m oisture from the can, and in consequence the contents remain unimpaired under practically any and all cli matic conditions. 40

tails of construction and operation may be varied through a wide range, without de- "parting from the principles of this invention, for I have described but one (and that thepreferred) form of. my invention, and I therefore do .not purpose limiting thepatout to be granted. on this application otherwise than necessitated by the prior art. I claim as my invention: I 1. A can fillingand eompressingfmachine embracing a traveling bed for the cans, means deliverin material into the cans when supported t ereon, reciprocating plungers for compressing said material, and a maximum compressingdevice acting to complete the compression and to maintain the compressing pressure for a timed interval. Y 2. A compressing machine of the class described embracing a traveling bed "for the cans to be filled, means delivering the material thereinto, reciprocating lungers, means actuating the same to afior a preliminary compression, and means acting thereon to increase the pressure to maximum and to re-.

L of this class- Atthe moment the plungers ischargie'condition. The operits usual. and "proper form when It is, of course, to be understood that detion.

.tain th'e.pressurethereon for a timed pe riod.

filling or charging the cans, one or more plungers, means projectmg the same into the cans to compress the material therein, a

1 calm-operated lever for increasing said pres- .sure to maximum and retaining the pres sure thereon for a timed interval, and means engagingand supporting the cans peripherally during the compressing operation.

4. A machine of theclass described em bracing"- reciprocating plungers, means actuating the same to afiord preliminary compression, a power operated lever for increasing said pressure to maximum, and retaining said ressure for an Interval suflicient v to permit the material to set, and reciprocating. .means for advancing the cans to and from compressing position. I l .1

the class described em-.

A machine of bracing an intermittently traveling' conveyer for the cans to be filled, means for actuating the same, guides on said conveyer for positioning the cans to be filled, clamping mechanism for engaging the cans peunger or compressing the material in te cans while held by said clamping means, and 'means'coacting therewith to retain such pressure until the material has set.

6. Amachine of the class described emf bracing reciprocating plungers, means for actuating the same to afford a preliminary compression, means thereafteractuatmg the same to afiord maximum compression and to retain such pressure until the material has .set, and means supporting the cans peripherally during such compression and holding. 7. A machine of the class "described embracing mechanism for advancing the cans to compressing position, positive supports for the bottom and sides of'thecamcompressing means acting upon the material in the cans, means maintaining maximum pressure on said material until said material sets,

to' be filled, to and from compressing posi- 8. A machine of the class bracing in combination a carrier for the cans, afl'ording a support for the bottom ression acting to advance the cans to and rom filling position.

9. In a machine of the class described a means thereafter I 3. In a' compressin machine of th clas- 1:- desrlbed a eling ed for the cans, me

ripherall .durin the-filling, and a recipro- :cating and means mechanically advancing the cans v 115 descr bed emchain carrier comprising links of uniform size, a seat for a can bottom in the top of each, a recess in the under side of each link,-

said links to shift. the same to compressing position, reciprocating plungers positioned above said carrier and registering with the cans on said links at the limit of movement of the pawl bar, means for filling the cans with material, means actuating said plungers to afford a preliminary compression, a lever for increasing the pressure to maximum, and means supporting the cans peripherally'during the compressing operation.

10. In a machine of the class described a carrier for moving the cans to filling position, plungersfor compressing the material therein, oppositely movable clamps for engaging and supporting the cans peripherally therebetween during the compressing operation, a maximum compressing device'acting to complete the compression and to maintain the compressing pressure for a predetermined period of time, and coacting elements acting to simultaneously actuate and retract said plungers and clamps.

11. In a machine of the class described a carrier for moving the cans to filling position, plungers for compressing the material therein, a maximum compressing device acting to complete the compression and to maintain the compressing pressure for a predetermined interval, oppositely movable clamps for eng ging and supporting the cans peripherally therebetween during the compression operation, coacting elements acting to simultaneously actuate and retract said plungers and clamps, and means ad-- vancing the carrier acting after the retraction of the plunger and clamps.

12. In a machine of the class described a chain carrier comprising links, .a seat for a can bottom in the top of each, a recess in the under side of each link, a reciprocatable pawl bar extended beneath the upper run of said chain, pawls thereon for engaging said recesses in a plurality of said links to shift the same to compressing position and reciprocating plungers positioned above said carrier and registering with the cans in said links at the limit of movement of the pawl bar. v I

13. In a machine of the class described a chain'carrier comprising links of uniform site, a seat for a can bottom in the top of each, a recess in the under side of each link,

for engaging said recesses in a plurality "of position, reciprocating plungers positioned above said carrier andregistering with the a reciprocatable giawl bar extended beneath the upper run 0- said chain, pawls'thereon said links to shift the same to compressing cans on said links at the limitof movement ofthe pawl bar, means for filling the cans with material and means actuating said plungers to afford a compression.

14. In a machine of the class described er chain carrier comprising links of uniform size, a seat for a can bottom in the top of each, a reciprocatable pawl barextendedbeneath the upper run of said chain, awlsi thereon for engaging a plurality of said links to shift the same to compressing position, reciprocating plungers positioned i above said carrier and re 'steringwith the cans on said links at the limit of movement of the pawl bar, means for filling the cans with material, means actuating said plungers to afi'ord a preliminary compression and a lever for increasing the pressure to maximum.

15. In a machine of the class described a chain carrier comprising links, a seat for a can bottom in the top of each, a reciprocatable pawl bar extended beneath the upper run of said. chain, awls thereon for engaging a plurality of saiddinks to shift the same to compressing position, reciprocating 9. plungers positioned above said carrier and registering with the cans on sald links at the limit of movement of the pawl bar, means for filling the cans with material, means actuating said plungers to afford 9 compression and means supporting the cans peripherally during the compressing operation. V

16. In a machine of the class described a chain carrier comprising links, a seat for a ll can bottom in the top of each, a reciprocatable pawl bar extended beneath the upper run of said chain, pawls thereon for engaging a plurality of said links to shift the same to compressin osition, and reciproll cating plungers positioned above said car'- rier and registering with the cans on said links at the limit of movement of the pawl bar.

In testimony whereof I have hereunto subscribed my name in the presence of two subscribing witnesses.

EDWARD 'P. HOLDEN.

Witnesses:

CHARLES W. HILLS, Jr.-, GEORGE R. MOORE. 

